Question : Problem: Blackberry Keeps deleting emails?

I have a user (currently set up with POP) and his messages keep "vanishing", I look on his exchange profile I dont see anything amiss there, it seems to be isolated to his blackberry (8130 sprint).

Answer : Problem: Blackberry Keeps deleting emails?

This is a space saving feature of blackberries, take a look at the KB

http://www.blackberry.com/btsc/kb12383